#!/usr/bin python3
# -*- coding:UTF-8 -*-
# Author:nigo
def foo(*args, **kwargs):
    print('args = ', args)
    print('kwargs = ', kwargs)
    print('---------------')

foo(1,2,3,4)
foo(a=1,b=2,c=3)
foo(1,2,3,4, a=1,b=2,c=3)
foo('a', 1, None, a=1, b='2', c=3)

